const runtime.mutexStackLocked

4 uses

	runtime (current package)
		lock_spinbit.go#L61: 	mutexStackLocked = 0x200
		lock_spinbit.go#L297: 		if v&^mutexMMask == 0 || v&mutexStackLocked != 0 {
		lock_spinbit.go#L316: 		next := v | mutexStackLocked
		lock_spinbit.go#L330: 		flags := v & (mutexMMask &^ mutexStackLocked) // preserve low bits, but release stack lock